We won't have proof for months and months, but 2015 is evidently on track to beat it.
Assuming they continue at the 2% growth gate of the past few years, yes.... It will finally beat 1997. The crowd level trend suggests it, assuming fall follows last year.
Epcot is similarly almost back to 1997 levels at well. Epcot had 11.8M in 97 and had 11.45M last year. I believe they're also on target for having a record (or close) year.